How Super Capacitors Improve Automotive Applications

Jul. 16, 2021

Supercapacitors are common capacitor components. In this article let's try to understand how supercapacitors improve automotive applications.

All cars without exception use starter motor to boot up. During the starting process, especially at the moment of starting, the starting motor speed is zero and no induced electric potential is generated, therefore the starting current is large. Such high rate discharge can also damage the battery.

The drastic change in voltage during the start-up process is equal to extremely strong electromagnetic interference, which can cause electrical equipment to power down, forcing the electrical equipment to re-power after the generator start-up process, and the computer is likely to crash during this process. Therefore, it is necessary to improve the power supply of automobiles by improving the electromagnetic environment of automobile electrical equipment, improving the starting performance of automobiles and battery performance, or extending battery life.

The improved advantages of supercapacitors in automotive applications are as follows:

1)Improvement of electrical performance. The voltage drop at the start moment, the start current, the power output power at the start moment, the steady voltage during the start, the steady current during the start, and the average output power of the power supply during the start are all improved.

2)Improvement of startup performance. When the temperature is 10℃, the battery without super capacitor can also be started, but the speed and performance of starting the motor when the super capacitor is connected in parallel with the battery are much better. Supercapacitors can especially improve the starting performance in cold weather. At -20℃, because the performance of the battery is greatly reduced, it might be difficult to start or need to start repeatedly to operate normally, and when the super capacitor is connected in parallel with the battery, only one ignition is required, and its advantages are obvious.

3) Change of battery application status. Since the equivalent series resistance of the supercapacitor is much lower than the internal resistance of the battery, at the moment of starting, the supercapacitor outputs a large current, thereby reducing the battery output current, effectively reducing the polarization of the battery plate and preventing the increase of the internal resistance of the battery , So that the steady voltage of the start-up process is improved. This increases the service life of the battery.

How Super Capacitors Improve Automotive Applications

After reading the content of this article, I believe that everyone has an understanding of the advantages of super capacitors that can improve automotive applications. If you do not understand the selection and use, you can consult regular manufacturers. Dongguan Zhixu Electronics Co., Ltd (also JYH HSU(JEC)) is a ceramic capacitor manufacturing entity that manufactures and sells a full range of capacitor models with guaranteed quality. JEC has passed ISO9001:2015 quality management system certification. Our safety capacitors (X and Y series) and varistors have passed certifications of main industrial powers across the world and  our ceramic capacitors and film capacitors are in line with environmental protection directives.


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